In Mere Christianity C. S. Lewis wrote, “If anyone would like to acquire humility, I can, I think, tell him the first step. The first step is to realize that one is proud. And a biggish step, too. At least, nothing whatever can be done before it. If you think you are not conceited, it means you are conceited indeed.   

Without humility we fail to learn, because only knowing that we do not know opens our mind to instruction. Without humility we fail to love because the very beginning of love is a sense of unworthiness.

The worldly man treats certain people kindly because he ‘likes’ them: the Christian, trying to treat everyone kindly, finds himself liking more and more people as he goes on—including people he could not even have imagined himself liking at the beginning.”